input text 置灰例子

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function changeState(){    if (testform.select1.value == 1) {        testform.input1.className="";testform.input1.disabled = "";        testform.input2.className = "cantinput";testform.input2.disabled = "true";    }    else {        testform.input1.className = "cantinput";testform.input1.disabled = "true";        testform.input2.className = "";testform.input2.disabled = "";    }}
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